Method of using an areal array of tubular electron sources

Details Method of using an areal array of tubular electron sources Method of using an areal array of tubular electron sources

1982-01-27

1984-03-27

Roy, Upendra

Metal working

Method of mechanical manufacture

Assembling or joining

148 15, 148187, 2504923, 427 431, H01J 21263, H01J 3700, G01N 2300

Patent

active

044385579

ABSTRACT:
An areal array of tubular electron sources is disclosed for producing multiple directed electron beams. Sources (10) are located in a parallel array between a conductive back plate (12) at a closed end of the tubes and a conductive face plate (14) having holes therein aligned with the second open end of each of the electrode tubes (10). An electrical current source (30) is connected between the back plate (12) and face plate (14) to resistively heat each of the sources (10) to a temperature high enough for thermionic electron emission. Electron beams (34) are produced from within each of the tubular electrodes (10). Extraction means which may include a magnetic field from a coil (29) and an extraction lens (18) tends to withdraw the electrons from within the sources (10) in an intense, collimated beam (34). Beams (34) are accelerated toward a target (28) through a beam deflection unit (22) having holes (24) associated with each of the electron beams (34 ). Beam deflection plates (26) within each of the holes (24) deflect the electron beams (34) to impact selected points on a target (28).

REFERENCES:
patent: 1955537 (1934-04-01), Davies
patent: 2321149 (1943-06-01), Koch
patent: 2558019 (1951-06-01), Toulon
patent: 2581243 (1952-01-01), Dodds
patent: 2614942 (1952-10-01), Loosjes et al.
patent: 2635201 (1953-04-01), Rajchman
patent: 2640162 (1953-05-01), Espenschied et al.
patent: 2965801 (1960-12-01), Archer et al.
patent: 2972719 (1961-02-01), Michlin
patent: 3091719 (1963-05-01), Dyke et al.
patent: 3107303 (1963-10-01), Berkowitz
patent: 3128408 (1964-04-01), Goodrich et al.
patent: 3341730 (1967-09-01), Goodrich et al.
patent: 3363240 (1968-01-01), Cola et al.
patent: 3432668 (1969-03-01), Davy et al.
patent: 3458748 (1969-07-01), Hieslmair
patent: 3619608 (1971-11-01), Westerberg
patent: 3686727 (1972-08-01), Say et al.
patent: 3715242 (1973-02-01), Daniel
patent: 3833814 (1974-09-01), Nablo
patent: 3882355 (1975-05-01), De Witt
patent: 3928783 (1975-12-01), Hosoki et al.
patent: 3934167 (1976-01-01), Ponsen et al.
patent: 3935500 (1976-01-01), Oess et al.
patent: 3942017 (1976-03-01), Uehara et al.
patent: 3982147 (1976-09-01), Redman
patent: 4020381 (1977-04-01), Oess et al.
patent: 4213053 (1980-07-01), Pfeiffer

Affiliated with

Also associated with

Rating

Method of using an areal array of tubular electron sources does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of using an areal array of tubular electron sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of using an areal array of tubular electron sources will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1748604